/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/res2of.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:38:57,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:38:57,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:38:57,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:38:57,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:38:57,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:38:57,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:38:57,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:38:57,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:38:57,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:38:57,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:38:57,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:38:57,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:38:57,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:38:57,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:38:57,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:38:57,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:38:57,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:38:57,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:38:57,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:38:57,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:38:57,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:38:57,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:38:57,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:38:57,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:38:57,119 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:38:57,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:38:57,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:38:57,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:38:57,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:38:57,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:38:57,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:38:57,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:38:57,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:38:57,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:38:57,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:38:57,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:38:57,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:38:57,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:38:57,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:38:57,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:38:57,136 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 16:38:57,158 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:38:57,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:38:57,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:38:57,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:38:57,160 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:38:57,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:38:57,161 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:38:57,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:38:57,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:38:57,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:38:57,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:38:57,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:38:57,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:38:57,162 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:38:57,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:38:57,162 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:38:57,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:38:57,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:38:57,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:38:57,163 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:38:57,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:38:57,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:38:57,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:38:57,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:38:57,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:38:57,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:38:57,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:38:57,164 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:38:57,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:38:57,165 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:38:57,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:38:57,467 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:38:57,470 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:38:57,472 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:38:57,472 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:38:57,473 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res2of.c [2020-08-21 16:38:57,548 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6a393062/be4feabfa8654654b96798983133a8bc/FLAGc29ca3998 [2020-08-21 16:38:58,014 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:38:58,015 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/res2of.c [2020-08-21 16:38:58,021 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6a393062/be4feabfa8654654b96798983133a8bc/FLAGc29ca3998 [2020-08-21 16:38:58,373 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6a393062/be4feabfa8654654b96798983133a8bc [2020-08-21 16:38:58,382 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:38:58,385 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:38:58,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:38:58,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:38:58,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:38:58,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:38:58" (1/1) ... [2020-08-21 16:38:58,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1850e0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:58, skipping insertion in model container [2020-08-21 16:38:58,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:38:58" (1/1) ... [2020-08-21 16:38:58,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:38:58,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:38:58,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:38:58,683 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:38:58,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:38:58,723 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:38:58,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:58 WrapperNode [2020-08-21 16:38:58,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:38:58,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:38:58,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:38:58,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:38:58,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:58" (1/1) ... [2020-08-21 16:38:58,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:58" (1/1) ... [2020-08-21 16:38:58,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:58" (1/1) ... [2020-08-21 16:38:58,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:58" (1/1) ... [2020-08-21 16:38:58,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:58" (1/1) ... [2020-08-21 16:38:58,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:58" (1/1) ... [2020-08-21 16:38:58,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:58" (1/1) ... [2020-08-21 16:38:58,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:38:58,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:38:58,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:38:58,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:38:58,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:38:58,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:38:58,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:38:58,932 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 16:38:58,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 16:38:58,933 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:38:58,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:38:58,933 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 16:38:58,933 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 16:38:58,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 16:38:58,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 16:38:58,934 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 16:38:58,934 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:38:58,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:38:58,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 16:38:58,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:38:58,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:38:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:38:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:38:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:38:59,257 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:38:59,257 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-21 16:38:59,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:38:59 BoogieIcfgContainer [2020-08-21 16:38:59,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:38:59,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:38:59,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:38:59,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:38:59,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:38:58" (1/3) ... [2020-08-21 16:38:59,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f44fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:38:59, skipping insertion in model container [2020-08-21 16:38:59,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:58" (2/3) ... [2020-08-21 16:38:59,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f44fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:38:59, skipping insertion in model container [2020-08-21 16:38:59,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:38:59" (3/3) ... [2020-08-21 16:38:59,270 INFO L109 eAbstractionObserver]: Analyzing ICFG res2of.c [2020-08-21 16:38:59,282 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:38:59,289 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:38:59,305 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:38:59,327 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:38:59,328 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:38:59,328 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:38:59,328 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:38:59,328 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:38:59,329 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:38:59,329 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:38:59,329 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:38:59,352 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-08-21 16:38:59,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-21 16:38:59,358 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:38:59,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:38:59,359 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:38:59,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:38:59,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1797528887, now seen corresponding path program 1 times [2020-08-21 16:38:59,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:38:59,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798228491] [2020-08-21 16:38:59,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:38:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:38:59,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:38:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:38:59,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 16:38:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:38:59,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:38:59,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798228491] [2020-08-21 16:38:59,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:38:59,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 16:38:59,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932779068] [2020-08-21 16:38:59,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 16:38:59,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:38:59,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 16:38:59,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 16:38:59,616 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2020-08-21 16:38:59,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:38:59,768 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2020-08-21 16:38:59,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 16:38:59,770 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-08-21 16:38:59,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:38:59,779 INFO L225 Difference]: With dead ends: 76 [2020-08-21 16:38:59,779 INFO L226 Difference]: Without dead ends: 36 [2020-08-21 16:38:59,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 16:38:59,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-21 16:38:59,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-08-21 16:38:59,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-08-21 16:38:59,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-08-21 16:38:59,821 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 29 [2020-08-21 16:38:59,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:38:59,821 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-08-21 16:38:59,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 16:38:59,822 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-08-21 16:38:59,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-21 16:38:59,823 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:38:59,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:38:59,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:38:59,824 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:38:59,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:38:59,825 INFO L82 PathProgramCache]: Analyzing trace with hash 120259143, now seen corresponding path program 1 times [2020-08-21 16:38:59,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:38:59,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53170291] [2020-08-21 16:38:59,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:38:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:38:59,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:38:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:38:59,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 16:38:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:38:59,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:38:59,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53170291] [2020-08-21 16:38:59,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:38:59,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:38:59,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009980395] [2020-08-21 16:38:59,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:38:59,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:38:59,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:38:59,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:38:59,974 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 5 states. [2020-08-21 16:39:00,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:39:00,254 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2020-08-21 16:39:00,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 16:39:00,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-08-21 16:39:00,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:39:00,258 INFO L225 Difference]: With dead ends: 69 [2020-08-21 16:39:00,260 INFO L226 Difference]: Without dead ends: 48 [2020-08-21 16:39:00,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:39:00,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-21 16:39:00,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-08-21 16:39:00,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-21 16:39:00,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-08-21 16:39:00,281 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 29 [2020-08-21 16:39:00,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:39:00,281 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-08-21 16:39:00,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:39:00,282 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-08-21 16:39:00,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-21 16:39:00,283 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:39:00,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:39:00,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:39:00,284 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:39:00,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:39:00,285 INFO L82 PathProgramCache]: Analyzing trace with hash -774790125, now seen corresponding path program 1 times [2020-08-21 16:39:00,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:39:00,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131351616] [2020-08-21 16:39:00,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:39:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 16:39:00,379 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 16:39:00,380 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 16:39:00,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:39:00,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 04:39:00 BoogieIcfgContainer [2020-08-21 16:39:00,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 16:39:00,406 INFO L168 Benchmark]: Toolchain (without parser) took 2021.53 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 104.2 MB in the beginning and 95.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 72.0 MB. Max. memory is 7.1 GB. [2020-08-21 16:39:00,408 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 16:39:00,409 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.74 ms. Allocated memory is still 141.0 MB. Free memory was 103.8 MB in the beginning and 92.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-08-21 16:39:00,425 INFO L168 Benchmark]: Boogie Preprocessor took 144.53 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 92.9 MB in the beginning and 181.4 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-08-21 16:39:00,427 INFO L168 Benchmark]: RCFGBuilder took 393.08 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 160.6 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-08-21 16:39:00,428 INFO L168 Benchmark]: TraceAbstraction took 1140.92 ms. Allocated memory is still 203.9 MB. Free memory was 160.0 MB in the beginning and 95.1 MB in the end (delta: 64.8 MB). Peak memory consumption was 64.8 MB. Max. memory is 7.1 GB. [2020-08-21 16:39:00,433 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 337.74 ms. Allocated memory is still 141.0 MB. Free memory was 103.8 MB in the beginning and 92.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 144.53 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 92.9 MB in the beginning and 181.4 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 393.08 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 160.6 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1140.92 ms. Allocated memory is still 203.9 MB. Free memory was 160.0 MB in the beginning and 95.1 MB in the end (delta: 64.8 MB). Peak memory consumption was 64.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L28] int *b = malloc(sizeof(int)*N); [L29] int *c = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 [L32] COND TRUE i